Coffee maker



FIG. 1 is a perspective view of a coffee maker;

FIG. 2 is a front view of the coffee maker of FIG. 1;

FIG. 3 is a back view of the coffee maker of FIG. 1;

FIG. 4 is a left side view of the coffee maker of FIG. 1;

FIG. 5 is a right side view of the coffee maker of FIG. 1;

FIG. 6 is a top plan view of the coffee maker of FIG. 1;

FIG. 7 is a bottom plan view of the coffee maker of FIG. 1; and,

FIG. 8 is a perspective view, of the coffee maker of FIG. 1, wherein the operational portions are open. 

CLAIM The ornamental design for a coffee maker, as shown and described. 